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ArcticNet IRIS WorkshopArcticNet IRIS WorkshopProject 4.1Project 4.1
ArcticNet Modelling Scenarios Database (AMSD)
Jay AndersonDavid BarberWayne Chan
Jay Anderson
CEOS
University of Manitoba
2Commodore 64
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• Archive model data in a simple format (ASCII)• Provide a portal into large datasets that cannot be
archived on site (NARR)• Geocode the data for incorporation into GIS programs• “cut” the data to fit individual IRIS’s• Provide a “vault” for model data as projects end and
move forward• Promote the IRIS concept
Project 4.1 Goals
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Project 4.1 Status (1)
• GEM data has been archived in geocoded ASCII since August– Northern hemisphere at this stage– 15-km resolution– Surface parameters (21)– Use only analysis fields (00 and 12Z)– Distributed as zipped text file (200K points) each
about 2 megs in size
Project 4.1 status (2)
• A portal into NARR data is complete– Not stored on site, but converted “on the fly” to fit
geocoded ASCII goal– 85 surface-based parameters (of 186)– Provided as a zipped text file
• A portal to DFO WebTide program • 2-terabyte hard drive delivered (Tang: 140 Mb for one
month of ice data in NetCDF format)
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Sample of GEM data output The GEM grid
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Current projects
• Build ftp site at the UofM for data upload• NetCDF to ASCII algorithm• Response from owners of datasets• Build ‘cutouts’ for new IRIS boundaries
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Project 4.1 near term
• Add Tang’s model data for the east coast to the archive (CECOM)
• Add Flato/Sou’s Archipelago ice model data to the archive
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Flato/Sou: Canadian Archipelago
• Ice-ocean coupled model, 22-km grid (0.2°)• 1950-2004 observed forcing• 2041-2060 climate model forcing• 24-layer ocean• 2 category ice, ice advection
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Model Domain
Depth (m)
Canada
Beaufort Sea
Nares St
Baffin Bay
Jones SoundVictoria
Island
Baffin Island
LancasterSound
WellingtonChannel
Greenland
Sou: Canadian Archipelago
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Tang: Canadian East Coast Ocean Model (CECOM)
• Daily data, September 2004-05• Nares Strait to Gulf Stream including Gulf of St Lawrence• 0.1° x 0.1°• 15-layer atmosphere, 21-layer ocean temp, salinity, velocity; sea surface elevation; ice concentration, thickness, velocity, pressure
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Other models of interestMaslowski:
Beaufort IRIS5 (Arctic)
Saucier:Hudson Bay Oceanic ModelSouthern Baffin
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Project 4.1 longer term
• Add data from other model runs• Archive new databases as they are created• Expand offering to include multiple datasets
in one request
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Responsibilities
• Use of model data in research projects requires a collaborative agreement with the originator (except for GEM and NARR data)
• If the model is in the public domain, then normal publication citations are required
• Normally costs associated with data collection, conversion, and storage will be borne by Project 4.1
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